Tool.



No. 724,818. PATENTED APR. 7, 1903. I

N. CRANE.

TOOL.

APPLICATION FILED MAR. 55' 1902.

H0 MODEL.

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44k/Mw "cams mrrsas col, womumou WASHXNGTON n c UNITED STATES PATENTOFFICE.

NEWTON CRANE, OF BOSTON, MASSACHUSETTS.

TOOL.

. SPECIFICATION forming part of Letters Patent No. 724,818, dated April7, 1903.

Application filed March 5, 1902. Serial no. 96,797- (No model- To allwhom it may concern/.

Be it known that I, NEWTON CRANE, of Boston, in the county of Suffolkand State of Massachusetts, have invented certain new and usefulImprovements in Tools, of which the following is a specification.

This invention has for its object to provide a tool or oontrivance forstripping wheels, cams, sleeves, and other parts from a shaft or bar. ri

In machine-shops, and particularly where experimental or repair work isdone, it is necessary to frequently remove from a shaft or bar somepartwhich is placed thereon and which ordinarily fits snugly or tightly.The removal of such part has heretofore been accomplished withconsiderable labor and the expenditure of unnecessary time, so that thetool or appliance which I have invented is designed to remove the partsreferred to from a shaft with comparative ease and with the leastpossible expenditure of time and labor. The appliance is so constructedas to be capable of adjustment, whereby it can be employed for removingwheels, cams, or other parts of various diameters.

The invention consists of three essentialsto wit, means for engaging thepart to be removed, a nut to which the means are attached, and a screwpassing through said nut and adapted to engage the end of the shaft onwhich the said part is located.

According to the illustration of the invention the means for engagingthe part to be removed comprise two hooked arms which I are adapted tobe swung about pivotal conof the parts when the-collar is almost com--pletely removed from the shaft. Fig. 4 represents an end view of theappliance with the screw in section. Fig. 5 represents the arms inposition to be adjusted relatively to the nut. Fig. 6 illustrates theposition of the arms after adjustment. Figs. 7 and 8 illustra'te apintle for pivotally connecting an arm with the nut and a device fordetachably securing the pintle in place. Fig. 9 illustrates a form ofthe invention in which arms are attached. 7

As previously stated, the tool or appliance comprises the nut a, thescrew 1), and the swinging arms 0 c. The screw b is provided at its endwith a head I) of wrench-retaining formation by which it may be rotatedand caused to move longitudinally through the not a. The said nut isprovided with two pairs of laterally-projecting lugs a. a, the.

lugs of each pair being arranged in parallelism to receive betwen themthe ends of the arms 0. These in gs are longitudinally slotted, as at (1one wall of each slot being straight, as at a and the other wall beingformed with a series of rounded notches a, as clearly shownin Figs. 1,5, and 6, for a purpose to be described.

The arms 0 c are provided on their free ends with hooks or engagingportions c,which project inwardly or toward each other, the oppositeends of said arms being likewise bent inwardly, as at 0 and beingapertured to receive pintles d d, which are located substantially inalinement with the inner walls or edges of the said arms, so that thelongitudinal pull upon the arms will not cause them to be separated. j

The pintles d d may be formed in any desired way and are preferablyremovable. Each is flattened, as at d, along one side to fit in thecomplementally-shaped aperture in the arms, The aperture is so formed inthe arm that when the arms are in operative position, as in Figs. 1 and3, the flattened portions at of the pintles will be at an angle to thefiat or straight walls a of the slots 0, The pintle is formed at one endwith a head (1 and at the other end with a groove (1 for the receptionof a spring-catch e on a washer 6 The spring;catch may be formed ofwire, as indicated, bent to provide the two ends e which when pressedtogether will separate the two limbs of the wire and lift them out ofthe groove (1 The spring-catch is secured upon the washer e in anysuitable way.

The head' d and the washer e and springcatch 6 hold each pintle againstlongitudinal movement or displacement. It will be observed that when thearms are in operative position the pintles lie in the curved notches a,formed in the side walls of the slots a and are prevented from movinglongitudinally of the slots. In order to adj ustsaid arms toward andfrom the center of the nut, the arms may be swung outward or away fromeach other, as shown in Fig. 5, to bring the flat sides d of the pintlesin parallelism with the walls of the slot a at which time said arms maybe moved in the slots to any desired position, after which the arms areagain swung toward each other to partially rotate the pintles, and thushold the arms in the adjusted position, as indicated in Fig. 6.

In Figs. 5 and 6 the arms are broken away; but it is to be understoodthat they are relatively longer in these figures than in Figs. 1 to 3,inclusive, for it is my purpose to provide each nut with a plurality ofsets of arms of different lengths, so as to adapt the tool for use ondiiferent sizes or lengths of shafts or bars. Each set of arms isreadily detachable by removing the pintles from the ends of the arm.Each nut may be formed with a difierent number of bars or lugs. It willbe seen in Fig. 9 that instead of having two, as in Fig. 7, the nut isprovided with four bars, so that there are four arms for engaging theparts to be removed from the shaft.

To assist in the securing of the spring-catch upon the end of thepintle, the latter is somewhat pointed, as at 61 (See Fig. 7.)

The operation of the device will be readily understood. The arms areadjusted to proper position, their hooked ends are slipped over theperiphery of the part A, and the nut b is engaged with the end of theshaft 13. By a suitable tool the screw is rotated and the shaft isforced from the part A as the screw is advanced through the nut.

By providing the device with the radial lugs and the pivoted connectionof the arms therewith one set of arms may be employed for cams or partsof different sizes. The arms are free to swing independently of eachother and may be widely separated at their free ends to embrace articlesof uneven shape.

Having thus explained the nature of the invention and described a way ofconstructing and using the same, although without attempting to setforth all of the forms in which it may be made or all the modes of itsuse, I declare that what I claim is- 1. An appliance for separating twomembers, comprising a nut having radial lugs, arms in free pivotalrelation to said lugs and having provisions on their free ends forengagement with one of said members, and a screw passed through said nutand adapted to be engaged with the other of said members.

2. An appliance for separating two members, comprising a nut havingradial lugs, arms in pivotal relation to said lugs, and bodilyadjustable at their pivoted portions toward and from the center of saidnut, and a screw passed through said nut, said arms and nut beingadapted for engagement with the said respective members.

3. Au appliance for separating two members, comprising a screw, coactingarms, pintles on said arms, and a nut through which said screw is passedand having radial lugs with provisions for the reception of said pintlesat any of a plurality of points at different radial distances from thesaid screw, said screw and arms having provisions for engagement withsaid respective members.

4:. An appliance for separating two members, comprising a screw,coacting arms each having a hook at one end and a pintle at the other,the pintles having their sides flattened, and a nut having radial slotsthe walls of which are respectively flat and notched.

5. Au appliance for separating two members, comprising a screw, a nut,and hooked arms in pivotal relation to said nut, said nut and armshaving provisions whereby said arms are bodily adjustable at theirpivoted portions toward or from each other when moved to inoperative orabnormal position, and are held against bodily adjustment when inoperative position.

In testimony whereof I have affixed my signature in presence of twowitnesses.

NEWTON CRANE.

Witnesses:

M. 13. MAY, GEORGE PEZZETTI.

